System and method for determining capacity of a telecommunications network

ABSTRACT

Aspects of the present disclosure involve systems, methods, computer program products, and the like, for determining an estimated capacity for providing data from a telecommunications network to a plurality of end users. In one implementation, the estimated capacity for delivering the data to the end users is per transmission path or per access network connected to the telecommunications network. This information may be aggregated into a traffic flow table that illustrates the traffic flow and available capacity to one or more end user networks. Through analysis of the traffic flow table, the system determines an estimated available capacity to provide the data to the end users. The traffic flow table thus provides a more accurate estimate of the capacity of the telecommunications network to provide the data to the end users over previous capacity estimates.

TECHNICAL FIELD

Aspects of the present disclosure generally relate to systems andmethods for implementing a telecommunications network, and morespecifically for determining available capacity of one or more ports ofthe telecommunications network for providing data to customers of thenetwork.

BACKGROUND

Telecommunication or other types of computer networks provide for thetransmission of information across some distance through terrestrial,wireless or satellite communication networks. Such communications mayinvolve voice, data or multimedia information, among others. Typically,such networks include several servers or other resources from which thecontent or network services can be supplied to a requesting end user.Thus, most end users can access the network through one or more accessnetworks or ports into the network such that there may be presentseveral transmission paths between the network server and the end user.Determining which path content or data takes through the network to arequesting end user is often difficult for network administrators.

In addition, it is often the case that customers or clients utilize atelecommunications network to provide vast amounts of data to many endusers of the network. In these circumstances, the customers will requestcapacity information for providing the data to the end users. Thenetwork or network administrators estimate the available capacity forthe customer on the telecommunications network in a general manner thatdoes not take into account the various transmission paths through thenetwork to the end users of the network. As such, the capacity estimatesprovided by the telecommunications network may overestimate theavailable capacity for one or more transmission paths when providingsuch estimates to the network customer. In this manner, the network maynot be able to provide some services to a customer after the estimatedavailable capacity is provided.

It is with these and other issues in mind that various aspects of thepresent disclosure were developed.

SUMMARY

One implementation of the present disclosure may take the form of amethod for providing data from a telecommunications network. The methodincludes the operations of obtaining traffic flow information for thetelecommunications network, the traffic flow information comprising anestimated bytes of data transmitted from the telecommunications networkthrough a plurality of egress ports to a plurality of end user networksin communication with the telecommunications network, wherein eachegress port of the plurality of egress ports is associated with at leastone of the plurality of end user networks and receiving an indication ofavailable capacity for each of the plurality of egress ports. Further,the method includes the operations of storing the traffic flowinformation and indication of available capacity for each of theplurality of egress ports in a database, calculating an estimatedcapacity for each of a set of the plurality of egress ports, andadjusting a network configuration based at least on the calculatedestimated capacity for each of a set of the plurality of egress ports toprovide a requested network service to a plurality of end users of thetelecommunications network.

Yet another implementation of the present disclosure may take the formof a system for operating a telecommunications network. The systemincludes a server with a processor and a computer-readable mediumassociated with the processor and including instructions stored thereonand executable by the processor. When executed, the processor performsthe operations of obtaining traffic flow information for thetelecommunications network, the traffic flow information comprising anestimated bytes of data transmitted from the telecommunications networkthrough a plurality of egress ports to a plurality of end user networksin communication with the telecommunications network, wherein eachegress port of the plurality of egress ports is associated with at leastone of the plurality of end user networks and receiving an indication ofavailable capacity for each of the plurality of egress ports. Further,the instructions cause the processor to store the traffic flowinformation and indication of available capacity for each of theplurality of egress ports in a database, calculate an estimated capacityfor each of a set of the plurality of egress ports, and adjust a networkconfiguration based at least on the calculated estimated capacity foreach of a set of the plurality of egress ports to provide a requestednetwork service to a plurality of end users of the telecommunicationsnetwork.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an example network environment for distributing content to anend user from a network, such as a content delivery network.

FIG. 2 is a flowchart illustrating a method for adjusting atelecommunications network configuration in response to transmissionpath specific capacity information.

FIG. 3 is a network capacity table to a plurality of end user networksof a telecommunications network.

FIG. 4 is a network capacity table to a plurality of end user networksof a telecommunications network utilized to configure a network inresponse to a customer request.

FIG. 5 is a diagram illustrating an example of a computing system whichmay be used in implementing embodiments of the present disclosure.

DETAILED DESCRIPTION

Aspects of the present disclosure involve systems, methods, computerprogram products, and the like, for determining an estimated capacityfor providing data from a telecommunications network to a plurality ofend users. In one implementation, the estimated capacity for deliveringthe data to the end users is per transmission path or per access networkconnected to the telecommunications network. Thus, the system may obtainnetwork traffic flow information to and from one or more access networksconnected to the telecommunications network. This information may beaggregated into a traffic flow table that illustrates the traffic flowand available capacity to the one or more access networks. In oneinstance, the one or more access networks may be the available accessnetworks for a particular geographic area or region, such as NorthAmerica. Through analysis of the traffic flow table, the systemdetermines an estimated available capacity to provide the data to theend users. The traffic flow table thus provides a more accurate estimateof the capacity of the telecommunications network to provide the data tothe end users over previous capacity estimates.

Further, the traffic flow table information may be utilized by thetelecommunications network or a network administrator to configure thenetwork to provide the data to the end users. For example, particulartransmission paths may have capacity to carry the data while othertransmission paths may have little to no available capacity. A networkadministrator may then decide which access networks or transmissionpaths are available to provide the data and configure the network toprovide the data to the end users through the available access networks.This provides a more efficient telecommunications network that lessenscongestion at access networks or transmission paths that alreadytransmit large amounts of data. The traffic flow table information mayalso be utilized by sales people associated with the telecommunicationsnetwork in selling telecommunication services to existing and potentialcustomers. In general, determining the available capacity oftransmission paths through one or more access networks in a regionprovides a clearer understanding of the capabilities of the network whenproviding services to customers and end users of the network.

In other embodiments, the telecommunications network may utilize thecapacity information to provide versatility in providing and billing forprovided content. For example, the information may be used in anauction-type of system to price bandwidth which would then result in thehighest bidder being allowed to utilize certain paths, while sellingremaining bandwidth paths to the next bidder, and/or providing the nextbidder with an indication of how much traffic the network can accept ina region. Also, if demand cannot be met, the network may tell therequesting customer how much traffic can be served, without disclosingat which point the network would become congested.

FIG. 1 is an example network environment 100 for distributing content toone or more users. In one implementation, a CDN 102 is communicablycoupled to one or more access networks 106, 108. Although a CDN 102 isillustrated in FIG. 1 , it should be appreciated that the embodiments ofthe present disclosure may be utilized in any type of computer network,including but not limited to, a Voice over Internet Protocol (VoIP)network, a Domain Name System (DNS) network, enterprise network and thelike. Regardless of the type of network used, the one or more accessnetworks 106, 108 may be under the control of or operated/maintained byone or more entities that provide access to the CDN 102. For example,the network environment 100 of FIG. 1 illustrates two access networks,namely access network A 108 and access network B 106, through whichcontent may be retrieved from the CDN 102. To access the CDN 102, a usermay utilize an end user device 104 (discussed in more detail below) toaccess an end user network 130. The end user network 130 may provideInternet access to a user device 104 associated with an end usernetwork, such as, for example, one or more Internet Service Providers(ISPs). In turn, the end user network 104 utilizes one or more accessnetworks 106, 108 to obtain content from the CDN 102. The processthrough which the end user network 130 selects an access network 106,108 to access the CDN 102 is discussed in greater detail below.

As mentioned, the CDN 102 is capable of providing content to a userdevice 104, which is generally any form of computing device, such as apersonal computer, mobile device, tablet (e.g., iPad), or the like.Content may include, without limitation, videos, multimedia, images,audio files, text, documents, software, and other electronic resources.The user device 104 is configured to request, receive, process, andpresent content. In one implementation, the user device 104 includes anInternet browser application with which a link (e.g., a hyperlink) to acontent item may be selected or otherwise entered, causing a request tobe sent through the end user network 130 and one or more access network106, 108 to a directory server 110 in the CDN 102.

The directory server 110 responds to the request by providing a networkaddress (e.g., an IP address) where the content associated with theselected link can be obtained. In one implementation, the directoryserver 110 provides a domain name system (DNS) service, which resolvesan alphanumeric domain name to an IP address. The directory server 110resolves the link name (e.g., URL or other identifier) to an associatednetwork address from which the user device 104 can retrieve the content.

In one implementation, the CDN 102 includes an edge server 112, whichmay cache content from another server to make it available in a moregeographically or logically proximate location to the user device 104.The edge server 112 may reduce network loads, free capacity, lowerdelivery costs, and/or reduce content download time. The edge server 112is configured to provide requested content to a requestor, which may bethe user device 104 possibly via an intermediate device, for example, inthe access network 106, 108. In one implementation, the edge server 112provides the requested content that is locally stored in cache. Inanother implementation, the edge server 112 retrieves the requestedcontent from another source, such as a media access server (MAS) (e.g.,a content distribution server 114 or a content origin server 116 of acontent provider network 118). The content is then served to the userdevice 104 in response to the requests.

Although the edge server 112, the content distribution server 114, andthe content origin server 116 are shown as part of the CDN 102, itshould be appreciated that the access networks 106, 108 may also includesimilar components. Thus, the content requested by the user device 104may be provided from access network A 108, access network B 106, and/orthe end user network 130 in a similar manner as described above. Inother words, the content requested and provided to the end user 104 maytake many routes through the CDN 102, access networks 106, 108, and theend user network 130 depending on which content server is tasked withproviding the content. Thus, although this particular disclosureutilizes the example of providing the content to the requesting device104 through access network A 108 or access network B 106, any number ofaccess networks and connections to the CDN 102 may be utilized by theend user network 130 to receive the requested content. Further, althoughdiscussed in relation to a CDN 102, similar methods and techniquesdiscussed herein apply to other telecommunications networks, such as anetwork providing IP-related services to the end user 104.

In one embodiment of the network 100, many end user devices 104 mayrequest the same or similar content from the CDN 102. For example, theCDN 102 may store and provide a software update to any number of enduser devices 104 in communication with the CDN 102. Thus, the contentprovided by the CDN 102 may be transmitted to hundreds or thousands ofend user devices 104, potentially at the same time, resulting in thetransmission of large amounts of data from the CDN to the various userdevices. As such, the network 102 or administrator of the network maydetermine the capacity available from the network to provide to thelarge amounts of data before transmitting the data to the end users 104.In this manner, the impact of the transmission of the data to the endusers 104 may be estimated so that the network performance may bemaintained.

Traditionally, the network 102 or network administrator would determinethe capacity for providing content to end users 104 may simply adding upthe available capacity through all transmission paths to the end user.Utilizing the configuration 100 of FIG. 1 , the CDN 102 may determinethe available capacity to the end user 104 through access network A 108and through access network B 106 and determine the overall availablecapacity by adding the capacities of each access network together.However, the CDN 102 may not generally provide content to the end user104 equally through the various access networks 106, 108 available tothe end user. Rather, the CDN 102 typically attempts to provide thecontent to the end user 104 along the shortest geographical path toreduce transmission impact on the network. In other words, if accessnetwork A 108 is geographically (or in some instances, logically) closerto the server providing the content to the end user device 104, the CDN102 may be biased to provide the content to the end user device throughaccess network A. In such a case, although access network B 106 may havemore capacity to provide the content to the end user 104, the contentmay instead be provided to the end user through access network A 108 dueto the location of the server 112 providing the content. This inaccuracyin the determination of the capacity of the CDN 102 to provide thecontent is increased as more and more end user devices 104 requestcontent from the CDN, especially if a majority of those end user devicesreceive the content through a particular access network.

In addition, end user network 130 may have a business or other type ofrelationship with access network A 108 or access network B 106 wherebyend user network utilizes some form of traffic engineering to ensureinbound traffic from network 102 is distributed in some manner betweenboth access network A and access network B. For example, end usernetwork 130 may advertise 50% of its network routes via access network A108 and advertises the other 50% of its network routes via accessnetwork B 106. In such a case, 50% of the traffic from network 102 flowsthrough access network A 108 and 50% flows through access network B 106.Determining the point of congestion if incremental traffic is added tonetwork 102 may be complex because end user network 130 may not directlyconnect to the CDN. In this manner, there exist situations where trafficflows are distributed across multiple access networks, but not allaccess networks are able to reach all of a given end user networkdirectly.

To address this inaccuracy in determining the capacity of the CDN 102 toprovide large amounts of data to one or more end user devices 104, amore accurate method for determining the capacity of the CDN is providedbelow. In particular, FIG. 2 is a flowchart illustrating a method foradjusting a telecommunications network configuration in response totransmission path specific capacity information. In general, theoperations of FIG. 2 are performed by the network (such as the CDN 102of FIG. 1 ) or a network administrator. In one particular example, theoperations may be a script that is executed by a computing device. Themethod 200 determines capacity for providing data from the network 102based on various transmission paths the provided data may travel throughone or more access networks connected to the network. Thus, capacityinformation may be obtained and determined based on multipletransmission paths for provided requested data to an end user to providea more detailed understanding of the available capacity of the network.This information may then be utilized to adjust the configuration of thenetwork to accommodate the request for providing the data.

In operation 202, the network 102 or network administrator receives arequest to provide data or telecommunication services to a plurality ofend users 104 connected to the network. In one example, the network 102may receive a request from a customer to provide a software update toeach end user 104 of the network with a particular computing device. Inthis example, large amounts of data may be provided to many end userdevices 104 from the network 102, consuming large amounts of networkcapacity in the process. In response to this request, the network 102 oradministrator may determine if the network has enough capacity to meetthe request to provide the data and may adjust the network configurationaccordingly once the available network capacity is determined. In otherexamples, the request may be received via an automated trafficreservation system and may be automatically processed, sent back to ahuman operator or automated system to adjust the network based onwhether or not the demand can be met without any network changes.

To determine the available network capacity, the network 102 may obtaintraffic flow information for a particular region of the network inoperation 204. For example, the network 102 may obtain traffic flowinformation for the portion of the network in North America or inEurope. In general, the region of the network 102 from which the trafficflow information is obtained may be any portion of the network relatedto any region, including the entire network. Further, the type oftraffic flow information obtained by the network may be similar innature to the request received from the customer. More particularly, thenetwork 102 may determine the type of data or services requested to beprovided by the network. For example, the customer may request thenetwork provide data from a CDN 102 to one or more end users 104. Insuch a circumstance, the network 102 may obtain historical CDN-relatedtraffic flow information to aid in determining the capacity fortransmission paths from the CDN to the end users. In another example,the customer may request providing data through one or more IP-basedservices to end users 104 of the network 102. In this circumstance, thenetwork 102 may obtain IP-related traffic flow information from thenetwork to end users 104 to aid in determining the capacity fortransmission paths from the network to the end users. In this manner,the network 102 may obtain type-specific traffic flow information forthe network based on the type of data or services requested by thecustomer to be provided by the network.

The traffic flow information obtained by the network may include anyinformation concerning the flow of packets to and from the network. Forexample and as mentioned above, the traffic flow information may be fora particular region of the network. Further, the traffic flowinformation may be categorized or parsed based on any characteristic ofthe packets transmitted by or to the network in operation 206. Forexample, the traffic flow information may be categorized based on thegateway each packet enters the network (referred to as the “sourcegateway”), the gateway each packet leaves the network (referred to asthe “egress gateway”), the destination access network (referred to asthe “destination Autonomous System Number” (ASN)), the access network towhich each packet leaves the network (referred to as the “egress ASN”),the particular port through which each packet leaves the network(referred to as the “egress interface”), the particular port throughwhich each packet enters the network (referred to as the “ingressinterface”), and the like. In one implementation, the network 102 mayuse the categorized information to determine the number of bytes orpackets that are transmitted to and from the network to various accessnetworks 106, 108 connected to the network. As explained in more detailbelow, this information may be aggregated into a table to provide thenetwork or administrator of the network an estimated available capacityfor transmission paths to/from the network.

In addition, such categorized traffic flow information may aid thenetwork 102 in determining the type of data or services requested by thecustomer. For example, the customer may request bandwidth from thenetwork 102 for providing data from the customer's network to end users104. By analyzing the inbound traffic packets from the customer'snetwork, the network 102 may determine the type of data or servicesbeing provided and tailor obtaining the traffic flow informationaccordingly. In particular, if the data provided by the customer'snetwork arrives on an inbound port associated with a CDN or from aparticular source gateway associated with the CDN, the network 102 maydetermine that the data provided is likely to be provided from aCDN-type network. Thus, the network 102 may obtain traffic flowinformation for a CDN portion of the network to more finely tune theinformation used to estimate the available capacity of one or moretransmission paths for providing the data to the end users 104.

In operation 208, the categorized traffic flow information is aggregatedand entered into a network capacity table. For example, FIG. 3 is anetwork capacity table 300 for a plurality of transmission paths from anetwork 102 to a plurality of end user networks. In particular, thetable 300 shows the top ten destination end user networks for a NorthAmerica region of the network and the top ten destination end usernetworks for a European region of the network. The top end user networksare listed in column 302 of the table 300, showing end user networks A-Kbeing North American end user networks and end user networks L-V beingEuropean end user networks. Also, each end user network is associatedwith a corresponding ASN listed in the table for quick reference by auser of the table. Although the table 300 shown in FIG. 3 includes tenend user networks for each region of the network 102, the traffic flowdata from any number of such end user networks may be included in thetable.

In general, the traffic flow information obtained by the network 102 asdiscussed above is utilized to populate the columns and rows of thenetwork capacity table 300. For example, because the traffic flowinformation may be categorized based on inbound, egress, and destinationinformation, the relative transmission path through the network 102 forvarious packets may be determined and associated with one or more enduser networks. As such, the general traffic flow to and from one or moreend user networks 130 associated with the network 102 may be determinedand the estimated capacity for providing additional packets and/or dataalong those transmission paths to the end user networks may bedetermined. This is illustrated in the network capacity table 300 ofFIG. 3 . For example, the traffic flow information of the network 102may be utilized to determine the overall percentage of traffic from thenetwork that flows to each end user network 130 connected to orotherwise associated with the network. This percentage is illustrated incolumn 304 of the table 300. In particular, column 304 shows thepercentage of the total traffic flow that is transmitted to each enduser network 130 from the CDN portion of the network, although a similarcolumn may be created in the table 300 for other types of networktraffic. As described above, the traffic flowing to the end user network130 may come from access network A 108 or access network B 106 (amongother possible access network routes to the end user network). Thepercentage of total traffic flow to the end user network 130 througheach access network 106, 108 may be utilized to determine the end usernetworks 302 associated with the network 102. In another example, thenumber of end user networks 130 included in column 302 may be any enduser network that exceeds a particular percentage of total traffic asset by the network or network administrator.

Associated with each end user network 302 listed in the table 300 is oneor more egress ports from the network 102 to the listed end usernetwork. In general, the network 102 may provide traffic or packets toeach end user network 130 through any number of egress ports and oraccess networks 106, 108. In the example of the network capacity table300 shown in FIG. 3 , the top three egress ports (and associated accessnetworks) for providing packets to each end user network is shown. Inparticular, columns 306-310 provide traffic flow information for theegress port for each end user network with the highest percentage oftraffic from the network to that end user network, columns 312-316provide traffic flow information for the egress port for each end usernetwork with the second highest percentage of traffic from the networkto that end user network, and columns 318-322 provide traffic flowinformation for the egress port for each end user network with the thirdhighest percentage of traffic from the network to that end user network.Although the traffic flow information for three egress ports for eachend user network 302 is shown, the table 300 may include suchinformation for any number of egress ports. In one particularimplementation, the table 300 includes such information for the top fiveegress ports for each end user network.

The rows of the table 300 provide traffic flow information for the enduser network 302 identified in the row. For example, end user network Ais listed in row 324 of the table 300. Thus, the information included inrow 324 of the table 300 relates to the traffic flow to that particularend user network. For this end user network, column 306 includes anidentifier 306 for the top egress port to that end user network, column308 includes the percentage of total traffic transmitted to that enduser network from the network 102 through the egress port identified incolumn 306, and the available capacity through that egress port islisted in column 310 (listed as available units of data in the table).In one implementation, the capacity through the identified egress portis obtained by the network by transmitting one or more queries to therouter or routers associated with the egress port and recording usageduring peak periods (or other time periods similar to the desired timeperiod). In the particular example of end user network A, the table 300indicates that the egress port from the network to the end user networkwith the highest percentage of traffic is 1000 SJO, which receives 22%of the total traffic sent to end user network A from the network, andhas zero or no available capacity. As used herein, each egress port isidentified by an identification number of an associated access network106, 108 and an indication of the particular city or metro in which theport is located. Thus, the egress port discussed above identifies theassociated access network by number 1000 and the city code SJO. Similartraffic flow information is provided for the egress port with the secondhighest percentage of traffic from the network to that end user networkin columns 312-316 and the egress port with the third highest percentageof traffic from the network to that end user network in columns 318-322.Also, similar traffic flow information is provided for the other listedend user networks 302 in the table 300. In some instances, such asindicated in row 326 for end user network J, all of the traffic sent tothat end user network is provided through one egress port such thatpercentage of total traffic 308 sent to the highest listed egress port306 is 100%.

Returning to the method of FIG. 2 , the network 102 or administrator mayanalyze the traffic flow information included in the table 300 todetermine an estimated capacity for providing data or services to one ormore end users 104 of the network in operation 210. In particular, thenetwork 102 may utilize the information of the network capacity table300 to quickly determine if any egress ports in the table for the listedend user networks 302 would become congested or impaired based on anoverall traffic mix, without some sort of network reconfiguration.Columns 330-338 of the network capacity table 300 provide an indicationof the capacity available for the various listed end user networks 302.The indications of the available capacity for each listed end usernetwork 302 may be utilized by the network 102 or an administrator todetermine how to configure the network to provide the requested dataand/or services, as discussed in more detail below.

Through the table 300, the available capacity (illustrated in the tablein available units of data) for each end user network 302 is determined.For example, the row 324 for end user network A indicates an availablecapacity (column 330) of zero or no capacity. To arrive at the availablecapacity, the table 300 analyzes the traffic flow information for eachegress ports associated with end user network A in row 324 (as seen incolumns 306-322) and determines the minimum capacity available. End usernetwork A as shown in row 324 has no capacity because the capacity forthe egress port with the highest percentage of total traffic to that enduser network is zero, as can be seen in column 310. Similarly, thecapacity for the egress port with the second highest percentage of totaltraffic to that end user network is zero, as can be seen in column 316.Note that column 322 indicates that the egress port with the thirdhighest percentage of total traffic to that end user network hascapacity (which is 6 units in the example shown in FIG. 3 ). However,because there is no capacity on egress port 1 and egress port 2 for enduser network A, the overall capacity for additional traffic flow toaccess port A is zero (as shown in column 330) as the available highquality (i.e., without congestion in this example) capacity is limitedby the egress port with the lowest amount of available capacity. In oneimplementation of the table 300, the limiting egress port for aparticular end user network is indicated in column 338. In other words,the listed limiting egress port 338 for each end user network 302 is theegress port for that end user network that will hit zero capacity firstand thereby limits the total available capacity to that end usernetwork.

In some instances, however, an end user network may have some availablecapacity for providing data to one or more end users 104 of the network102. For example, row 342 associated with end user network E indicatesthat the end user network has 144 units of available capacity (as shownin column 330 for row 342). This capacity is determined through thetraffic flow information for the egress ports associated with end usernetwork shown in columns 306-322. In particular, the traffic flowinformation in row 342 indicate that 25% of traffic to end user networkC is transmitted through egress port 1002 SJO with an available capacityof 36 units (columns 306-310), 22% of traffic to end user network C istransmitted through egress port 1005 WDC with an available capacity of84 units (columns 312-316), and 19% of traffic to end user network C istransmitted through egress port 1002 SEA with an available capacity of38 units (columns 318-322). Thus, because each egress port for the enduser network has some available capacity, the network 102 may provideadditional data or services to end users through the end user network.

To determine the available capacity to that end user network, thenetwork 102 or administrator may calculate how much data may betransmitted to the egress ports for the end user network before theavailable capacity for one egress port is consumed. In the particularexample of end user network C, the limiting egress port is 1002 SJO(column 338 of row 324) with 36 units of available capacity (column 310of row 324). However, because egress port 1002 SJO only carries 25% ofthe total traffic to that end user network (column 308 of row 324), thetotal available capacity for the end user network (column 330) is notlimited to exactly 36 units of available capacity. Rather, as thenetwork 102 provides data to end user network C, the traffic is brokenup among the various egress ports based on the percentages illustratedfor each egress port. Thus, available capacity is consumed for eachegress port associated with the end user network as data is transmittedthrough the ports from the network to end user network C. Because thetraffic is generally shared among the egress ports for end user networkC, the network 102 may transmit 144 units of data or services (column330 of row 324) to end user network C before egress port 1002 SJOreaches zero available capacity. The available capacity (column 330) iscalculated by taking the minimum of the available capacity divided bythe percentage of total traffic to that end user network for each egressport. In this example, egress port 1002 SJO is the limiting egress portand reaches zero available capacity first among the egress portsassociated with end user network C. In this manner, the availablecapacity to each end user network (as shown in column 330) is determinedby considering the available capacity of one or more egress ports fromthe network 102 to the end user network and calculating the availablecapacity an egress port has no more available capacity.

In a similar manner, the network 102 or administrator may determine theoverall available capacity for the combination of listed end usernetworks 302. In particular, column 336 provides the available capacityfor each end user network if data is provided to all of the listed enduser networks 302 in the table 300. Similar to above, the availablecapacity for each end user network is not necessarily limited to theavailable capacity listed in column 330. Rather, the network 102 mayprovide data to all of the available end user networks such that thedata is broken up among the various listed end user networks. Thus, theavailable capacity listed in column 336 for each listed end user networkis the amount of data (in whichever convenient unit of data such asgigabytes or terabytes) that may be transmitted to the end user networkbefore one of the end user networks runs out of available capacity. Theavailable capacity (column 336) for the end user networks is calculatedby taking the minimum of the available capacity divided by thepercentage of total traffic transmitted from the network. In the shownexample, the available capacity for data provided to the end usernetwork A (column 336 of row 324) is zero because, although the network102 transmits 8.45% of all traffic to end user network A (column 304 ofrow 324), end user network A has no available capacity (column 330 ofrow 324). In contrast, end user network C (row 342) has 144 units ofavailable capacity (column 330 of row 342) and, as 7.20% of the overalltraffic sent to end user networks by the network 102 is transmitted toend user network C (column 304 of row 342), 2,000 units of data may betransmitted to end user network C before the available capacity of enduser network C is consumed (column 336 of row 342). In this manner, theavailable capacity to each end user network (as shown in column 336) isdetermined by considering the available capacity for each of the enduser networks listed 302 from the network 102 before the availablecapacity for each end user network is consumed.

In addition, the table 300 may include a maximum available capacity forthe network region, shown as entry 340. In one implementation, themaximum available capacity for the network region is the minimumavailable capacity for all of the end user networks denoted in column338. In the example shown in FIG. 3 , the network 102 has no availablecapacity to provide the request for data and/or services from thecustomers because several of the end user networks are at full capacity,namely end user network A, end user network B, and end user networksE-G. This is indicated in column 336 by the zero value in the rows forthose end user networks. Thus, based on the traffic flow informationincluded in the network capacity table 300, the network 102 or networkadministrator cannot meet the request of the customer without impactingother traffic on the network. However, the table 300 may further beutilized by the network or administrator to determine a networkconfiguration to meet the customer's request. Upon determining thenetwork configuration to meet the customer's request and returning toFIG. 2 , the network 102 may adjust the network configuration to providethe requested data and/or services based on the information in thenetwork capacity table 300 in operation 212. One example of utilizingthe table to adjust the network configuration is illustrated in thenetwork capacity table 400 of FIG. 4 .

In general, the network capacity table 400 of FIG. 4 is populated withthe same network traffic flow information as the table 300 of FIG. 3such that the calculated estimated capacity available for end usernetworks and egress ports is the same. However, in this example, table400 may be adjusted to remove end user networks that do not haveavailable capacity. In particular, column 402 of the table 400 includesa binary entry to indicate whether the particular end user networkassociated with the entry is included in the calculations of availablecapacity of the network 102. In the implementation shown, a “1” value incolumn 402 indicates that the end user network for that row is includedin the overall capacity calculation and a “-” value in column indicatesthat the end user network for that row is not included in the overallcapacity calculation. In general, any binary value may be included inthe column 402 to indicate the inclusion of the related end usernetwork, including a yes or no indication.

When an end user network is removed from the calculation, other valuesin the table 400 are adjusted accordingly. In particular, the percentageof overall traffic transmitted by the network to a particular end usernetwork (shown in column 404) adjusts as end user networks are removedfrom the calculations of the table 400. In other words, the trafficshare seen by a particular end user network is redistributed to theother included end user networks in the table 400 when the particularend user network is removed. In one implementation, the particular enduser networks share of overall traffic is redistributed to the other enduser networks based on their percentage of overall network traffic. Inaddition, the available capacity associated with each end user networkis similarly adjusted as end user networks are removed. For example,column 406 of table 400 illustrates that, for those end user networksthat are not included in the capacity calculation, the availablecapacity is indicated as “N/A”. Thus, because the end user networks areremoved from consideration in the table 400, the end user network has noavailable capacity to include in column 406 such that N/A is included.

As mentioned above, the table 400 includes an indication of the maximumavailable capacity for the network region as entry 408. The maximumavailable capacity for the network region is the minimum availablecapacity for all of the end user networks denoted in column 406. Thus,as end user networks are removed from the calculation (perhaps bychanging the value included in column 402), the maximum availablecapacity for the network region 408 adjusts according to those end usernetworks that are included in the calculation. In the example shown intable 400, the maximum available capacity 408 for providing data and/orservices to end users of the network 102 is 366 units. This valueindicates the available calculated capacity that may be provided by thenetwork 102 to the remaining end user networks before end user network Dhits full capacity.

As mentioned above, the network 102 or an administrator may utilize thenetwork capacity table 400 to adjust a network configuration to respondto a request made by a customer of the network. In particular, thenetwork 102 may utilize the table 400 to determine which end usernetworks may be included in transmitting data or services to end usersof the network. For example, utilizing the table 400 of FIG. 4 , thenetwork 102 may determine that end user network A, end user network B,and end user networks E-G have no available capacity to provide data inresponse to a request by a customer. However, by removing these end usernetworks as possible transmission paths to the end customers, thenetwork 102 may provide 366 units of data or services to the end users.If the customer request includes a data transfer that exceeds the amountof maximum available capacity, the network 102 may remove end usernetwork D from receiving transmitted data to obtain an even highermaximum available capacity. In this manner, a set of available end usernetworks may be determined that provide enough available capacity tomeet the needs of the customer's request.

Further, the network 102 may then utilize the set of available end usernetworks to meet the customer's request and configure the networktransmission paths to end user networks accordingly. For example,through use of the table 400, the network 102 determines which end usernetwork are at capacity or near capacity. The network 102 may thenadjust the available transmission paths for providing the data and/orservices to avoid at capacity end user networks so that the request ofthe customer may be fulfilled by the network. In another example, thenetwork 102 may utilize the table 400 to determine which egress portsare at or near capacity and route the data to those egress ports thathave additional capacity. In yet another example, the network maydetermine which end user networks are shared by the end users of thenetwork 102 such that end user networks with higher available capacitymay be selected by the network to provide the data and/or services. Ingeneral, the network 102 may adjust the configuration of the networkand/or transmission paths from and/or through the network in response tothe network capacity table in an attempt to meet the request from thenetwork customer.

It should be appreciated that the network capacity table may not begenerated by the network 102. Rather, the table is merely arepresentation of traffic flow information obtained by the network andcorrelated to indicate the limiting egress ports and end user networks.The calculations described above and entered in the table may beperformed automatically by network 102 in one embodiment of the presentdisclosure. With the calculated available capacity determined, thenetwork 102 may adjust the configuration of the network accordinglywithout presenting the information in a table form. In anotherembodiment, the network 102 may perform the operations describedautomatically but provide the network flow information in the table foran administrator to view and understand the changes made to the networkconfiguration.

Previously, a network may determine the available capacity to provide arequest from a customer to end users by simply adding all availablecapacity for the end user networks in communication with the network.However, this approach failed to consider that some egress ports betweenthe network and the access ports may be fully congested or at fullcapacity, which may be hidden by the presence of other egress ports forthat end user network that has some available capacity. In addition, itcan be difficult to determine how traffic will utilize end user networksto reach an end user network not directly connected to the CDN,particularly when multiple end user networks and/or connections to enduser networks are involved and each share some traffic. Through theoperations and tables described herein, the network may analyze thetraffic flow and available capacity at one or more egress ports for oneor more end user networks for providing data and services to end users.By analyzing the percentage of all traffic flowing through the egressports and end user networks and the available capacity at each egressport, a more accurate determination of the available network capacity toprovide data and/or services is achieved. Further, this information maybe utilized to aid in adjusting the network configuration to avoidcongested connections and/or end user networks to better provide therequested data or services from the customer.

Additional information may also be gathered by the network andconsidered in the network capacity table. For example, the networkcapacity table 300 of FIG. 3 indicates that 25% of all traffic to enduser network C 342 passes through egress port 1002 SJO. However, it maybe that the network 102 connects to more than end user network C 342through that egress port such that additional traffic may pass throughthe egress port than is currently illustrated in the table 300. If anegress port supports more than one end user network, the estimatedavailable capacity determined through an analysis of the traffic flowinformation may be inaccurate. Thus, in another implementation of thepresent disclosure, the network capacity table 300 may account for alltraffic that flows through a particular egress port when determining theavailable capacity and, in particular, how much data may be given to theegress port before the port reaches maximum capacity. To account for thetraffic through a particular port, the table 300 may adjust thecalculations made to determine available capacity accordingly to providea more accurate available capacity measurement in the table 300. Throughthis, the network 102 may determine the available capacity for one ormore transmission paths through the various end user networks connectedor in communication with the network for providing data and/or servicesto end users of the network.

In addition, the telecommunications network may utilize the capacityinformation to provide versatility in providing and billing for providedcontent. For example, the information may be used in an auction-type ofsystem to price bandwidth which would then result in the highest bidderbeing allowed to utilize certain paths, while selling remainingbandwidth paths to the next bidder. Thus, the action taken by thetelecommunications network in response to the information of the tablesmay be to alter a pricing scheme for access to one or more of the egressports of the CDN. Also, the network may utilize the information of thetables to determine if demand for content cannot be met and inform oneor more of the requesting customers how much traffic can be servedbefore capacity is reached. In this manner, the information obtained andstored may be utilized by the telecommunications network for anypurposes to respond to changes in capacity on the egress ports to theend user networks.

FIG. 5 is a block diagram illustrating an example of a computing deviceor computer system 500 which may be used in implementing the embodimentsof the network disclosed above. In particular, the computing device ofFIG. 5 is one embodiment of a computing device of the network that mayperform one or more of the operations described above with reference toFIG. 2 . The computer system (system) includes one or more processors502-506. Processors 502-506 may include one or more internal levels ofcache (not shown) and a bus controller or bus interface unit to directinteraction with the processor bus 512. Processor bus 512, also known asthe host bus or the front side bus, may be used to couple the processors502-506 with the system interface 514. System interface 514 may beconnected to the processor bus 512 to interface other components of thesystem 500 with the processor bus 512. For example, system interface 514may include a memory controller 513 for interfacing a main memory 516with the processor bus 512. The main memory 516 typically includes oneor more memory cards and a control circuit (not shown). System interface514 may also include an input/output (I/O) interface 520 to interfaceone or more I/O bridges or I/O devices with the processor bus 512. Oneor more I/O controllers and/or I/O devices may be connected with the I/Obus 526, such as I/O controller 528 and I/O device 530, as illustrated.

I/O device 530 may also include an input device (not shown), such as analphanumeric input device, including alphanumeric and other keys forcommunicating information and/or command selections to the processors502-506. Another type of user input device includes cursor control, suchas a mouse, a trackball, or cursor direction keys for communicatingdirection information and command selections to the processors 502-506and for controlling cursor movement on the display device.

System 500 may include a dynamic storage device, referred to as mainmemory 516, or a random access memory (RAM) or other computer-readabledevices coupled to the processor bus 512 for storing information andinstructions to be executed by the processors 502-506. Main memory 516also may be used for storing temporary variables or other intermediateinformation during execution of instructions by the processors 502-506.System 500 may include a read only memory (ROM) and/or other staticstorage device coupled to the processor bus 512 for storing staticinformation and instructions for the processors 502-506. The system setforth in FIG. 5 is but one possible example of a computer system thatmay employ or be configured in accordance with aspects of the presentdisclosure.

According to one embodiment, the above techniques may be performed bycomputer system 500 in response to processor 504 executing one or moresequences of one or more instructions contained in main memory 516.These instructions may be read into main memory 516 from anothermachine-readable medium, such as a storage device. Execution of thesequences of instructions contained in main memory 516 may causeprocessors 502-506 to perform the process steps described herein. Inalternative embodiments, circuitry may be used in place of or incombination with the software instructions. Thus, embodiments of thepresent disclosure may include both hardware and software components.

A machine readable medium includes any mechanism for storing ortransmitting information in a form (e.g., software, processingapplication) readable by a machine (e.g., a computer). Such media maytake the form of, but is not limited to, non-volatile media and volatilemedia. Non-volatile media includes optical or magnetic disks. Volatilemedia includes dynamic memory, such as main memory 516. Common forms ofmachine-readable medium may include, but is not limited to, magneticstorage medium (e.g., floppy diskette); optical storage medium (e.g.,CD-ROM); magneto-optical storage medium; read only memory (ROM); randomaccess memory (RAM); erasable programmable memory (e.g., EPROM andEEPROM); flash memory; or other types of medium suitable for storingelectronic instructions.

Embodiments of the present disclosure include various steps, which aredescribed in this specification. The steps may be performed by hardwarecomponents or may be embodied in machine-executable instructions, whichmay be used to cause a general-purpose or special-purpose processorprogrammed with the instructions to perform the steps. Alternatively,the steps may be performed by a combination of hardware, software and/orfirmware.

Various modifications and additions can be made to the exemplaryembodiments discussed without departing from the scope of the presentinvention. For example, while the embodiments described above refer toparticular features, the scope of this invention also includesembodiments having different combinations of features and embodimentsthat do not include all of the described features. Accordingly, thescope of the present invention is intended to embrace all suchalternatives, modifications, and variations together with allequivalents thereof.

I claim:
 1. A method for providing data from a telecommunicationsnetwork, the method comprising: obtaining traffic flow information forthe telecommunications network, the traffic flow information comprisingan estimated bytes of data transmitted from the telecommunicationsnetwork through a plurality of egress ports to a plurality of end usernetworks in communication with the telecommunications network, whereineach egress port of the plurality of egress ports is associated with atleast one of the plurality of end user networks; calculating anestimated capacity for each of a set of the plurality of egress ports;and adjusting a network configuration based at least on the calculatedestimated capacity for each of a set of the plurality of egress ports toprovide a requested network service to a plurality of end users of thetelecommunications network.
 2. The method of claim 1 further comprising:receiving a percentage of total traffic transmitted from thetelecommunications to the at least one of the plurality of end usernetworks that is transmitted through at least one egress port associatedwith the at least one of the plurality of end user networks.
 3. Themethod of claim 2 further comprising: determining an estimated capacityfor providing data to at least one of the plurality of end user networksbased on a received indication of available capacity for the at leastone egress port and the percentage of total traffic transmitted from thetelecommunications to the at least one of the plurality of end usernetworks that is transmitted through the at least one egress port. 4.The method of claim 3 wherein the estimated capacity for providing datato the at least one of the plurality of end user networks is the amountof data transmitted from the telecommunications network to the at leastone of the plurality of end user network before the available capacityfor the at least one egress port is zero.
 5. The method of claim 3further comprising: receiving a percentage of total traffic transmittedfrom the telecommunications to all of the plurality of end user networksthat is transmitted to the at least one of the plurality of end usernetworks.
 6. The method of claim 5 further comprising: determining anestimated capacity for providing data to all of the plurality of enduser networks based on estimated capacity for providing data to the atleast one of the plurality of end user networks and the percentage oftotal traffic transmitted from the telecommunications to all of theplurality of end user networks that is transmitted to the at least oneof the plurality of end user networks.
 7. The method of claim 6 whereinthe estimated capacity for providing data to all of the plurality of enduser networks is the amount of data transmitted from thetelecommunications network to all of the plurality of end user networksbefore the available capacity for the at least one of the plurality ofend user networks is zero.
 8. The method of claim 7 wherein adjustingthe network configuration comprises removing one or more of theplurality of end user networks from a list of available end usernetworks.
 9. The method of claim 8 wherein the one or more of theplurality of end user networks are removed from the list of availableend user networks if the estimated capacity for providing data to one ormore of the plurality of end user networks is zero.
 10. The method ofclaim 1 wherein adjusting the network configuration comprises removingone or more of the plurality of end user networks from a list ofavailable end user networks.
 11. A system for operating atelecommunications network, the system comprising: a server comprising:a processor; and a computer-readable medium associated with theprocessor and including instructions stored thereon and executable bythe processor to: obtain traffic flow information for thetelecommunications network, the traffic flow information comprising anestimated bytes of data transmitted from the telecommunications networkthrough a plurality of egress ports to a plurality of end user networksin communication with the telecommunications network, wherein eachegress port of the plurality of egress ports is associated with at leastone of the plurality of end user networks; calculate an estimatedcapacity for each of a set of the plurality of egress ports; and adjusta network configuration based at least on the calculated estimatedcapacity for each of a set of the plurality of egress ports to provide arequested network service to a plurality of end users of thetelecommunications network.
 12. The system of claim 11 wherein theinstructions further cause the processor to: receive a percentage oftotal traffic transmitted from the telecommunications to the at leastone of the plurality of end user networks that is transmitted through atleast one egress port associated with the at least one of the pluralityof end user networks.
 13. The system of claim 12 wherein theinstructions further cause the processor to: determine an estimatedcapacity for providing data to at least one of the plurality of end usernetworks based on a received indication of available capacity for the atleast one egress port and the percentage of total traffic transmittedfrom the telecommunications to the at least one of the plurality of enduser networks that is transmitted through the at least one egress port.14. The system of claim 13 wherein the estimated capacity for providingdata to the at least one of the plurality of end user networks is theamount of data transmitted from the telecommunications network to the atleast one of the plurality of end user network before the availablecapacity for the at least one egress port is zero.
 15. The system ofclaim 13 wherein the instructions further cause the processor to:receive a percentage of total traffic transmitted from thetelecommunications to all of the plurality of end user networks that istransmitted to the at least one of the plurality of end user networks.16. The system of claim 15 wherein the instructions further cause theprocessor to: determine an estimated capacity for providing data to allof the plurality of end user networks based on estimated capacity forproviding data to the at least one of the plurality of end user networksand the percentage of total traffic transmitted from thetelecommunications to all of the plurality of end user networks that istransmitted to the at least one of the plurality of end user networks.17. The system of claim 16 wherein the estimated capacity for providingdata to all of the plurality of end user networks is the amount of datatransmitted from the telecommunications network to all of the pluralityof end user networks before the available capacity for the at least oneof the plurality of end user networks is zero.
 18. The system of claim17 wherein adjusting the network configuration comprises removing one ormore of the plurality of end user networks from a list of available enduser networks.
 19. The system of claim 18 wherein the one or more of theplurality of end user networks are removed from the list of availableend user networks if the estimated capacity for providing data to one ormore of the plurality of end user networks is zero.
 20. The system ofclaim 11 wherein the instructions further cause the processor to:receive the requested network service from a customer of thetelecommunications network, the requested network service comprisingtransmitting data to the plurality of end users of thetelecommunications network.